Netgear M4300-52G (GSM4352S) - Stackable Managed Switch with 48x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 用户手册

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Configure Switching Information 
214
M4200 and M4300 Series ProSAFE Managed Switches Web Management User Manual 
b. 
Update the values.
c. 
click the Apply button.
8. 
To delete an MST instance, do the following:
a.
Select the check box for the instance.
b. 
Click the Delete button.
For each configured instance, the information described in the following table displays on the 
page.
View the Spanning Tree MST Port Status
You can configure and display Multiple Spanning Tree (MST) settings on a specific port on 
the switch.
A port can become Diagnostically Disabled (D-Disable) when DOT1S experiences a severe 
error condition. The most common cause is when the DOT1S software experiences BPDU 
flooding. The flooding criteria is such that DOT1S receives more than 15 BPDUs in a 
3-second interval. The other causes for DOT1S D-Disable are extremely rare.
To view the Spanning Tree MST port status: 
1. 
Launch a web browser.
2. 
Enter http://<ipaddress> in the web browser address field.
The login window opens.
3. 
Enter the user name and password. 
The default admin user name is admin and the default admin password is blank, that is, 
do not enter a password.
Table 79.  MST Configuration 
Field
Description
Bridge Identifier
The bridge identifier for the selected MST instance. It is made up using 
the bridge priority and the base MAC address of the bridge.
Time Since Topology Change
The time n seconds since the topology of the selected MST instance 
last changed.
Topology Change Count
Number of times topology changed for the selected MST instance.
Topology Change
The value of the topology change parameter for the switch indicating if 
a topology change is in progress on any port assigned to the selected 
MST instance. It takes a value if True or False.
Designated Root
The bridge identifier of the root bridge. It is made up from the bridge 
priority and the base MAC address of the bridge
Root Path Cost
Path Cost to the Designated Root for this MST instance.
Root PortIdentifier
Port to access the Designated Root for this MST instance.